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Article ; Online: Post-exercise hypotension in male spontaneously hypertensive rats: The issue of calculation method.

Krzesiak, Amandine / Lavoie, Julie L / Sebille, Stéphane / Cognard, Christian / Bosquet, Laurent / Delpech, Nathalie

2023 Volume 11, Issue 4, Page(s) e15524

Abstract: In spontaneously hypertensive rats, exercise can lead to a post-exercise decrease in blood pressure, named post-exercise hypotension (PEH). This can be following physical training but also after a single bout of mild to moderate exercise when measured ... ...

Abstract	In spontaneously hypertensive rats, exercise can lead to a post-exercise decrease in blood pressure, named post-exercise hypotension (PEH). This can be following physical training but also after a single bout of mild to moderate exercise when measured with tail-cuff or externalized catheter methods. Our aim was to assess the PEH obtained with different calculation methods and to compare the magnitude of this effect induced by a moderate-intensity continuous exercise or a high-intensity intermittent exercise. Thirteen 16-week-old male spontaneously hypertensive rats performed two types of aerobic exercise (continuous or intermittent) on a treadmill. Arterial pressure was recorded by telemetry for 24 h which was started 3 h before physical exercise. Based on the literature, PEH was first evaluated with two different baseline values, and then with three different approaches. We observed that the identification of PEH depended on the method used to measure the rest value, and that its amplitude was also influenced by the calculation approach and the type of exercise performed. Hence, the calculation method and the amplitude of the detected PEH can significantly influence their physiological and pathophysiological inferences.
MeSH term(s)	Rats ; Animals ; Male ; Post-Exercise Hypotension ; Rats, Inbred SHR ; Hypertension ; Blood Pressure/physiology ; Physical Conditioning, Animal ; Hypotension
Language	English
Publishing date	2023-02-19
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2724325-4
ISSN	2051-817X ; 2051-817X
ISSN (online)	2051-817X
ISSN	2051-817X
DOI	10.14814/phy2.15524
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Facilitated engagement approach: A novel approach to guide mentor conversations.

Durrant, M / Oliver, C / Gottlieb, Laurie / Frechette, Julie / Lavoie-Tremblay, Melanie / Cyr, Guyaline

Nurse education today

2024 Volume 137, Page(s) 106152

Abstract: Background: Mentorship has been recognized as a strategy to develop leadership competencies in clinical leaders and has been integrated into leadership programs. However, there are few published frameworks to guide mentor conversations with mentees ... ...

Abstract	Background: Mentorship has been recognized as a strategy to develop leadership competencies in clinical leaders and has been integrated into leadership programs. However, there are few published frameworks to guide mentor conversations with mentees training to assume nursing leadership roles. Objective: This study explores mentors' perceptions of 6-month mentorship, a component of the Strengths-Based Nursing Leadership program, the effectiveness of the Facilitated Engagement Approach, a pedagogical strategy developed to facilitate conversation between the mentor and mentee, and the impact of mentorship on leadership practice of mentees. Methods: A mixed method qualitative and quantitative approach was used with semi-structured interviews and bi-weekly survey among mentors. Data were thematically analyzed. Results: Mentors described the use of the Facilitated Engagement Approach to guide their mentorship conversations and found it to be effective in mentoring program participants. Mentors described techniques used and the process of deepening a reflective mentorship conversation. The Spiraling Process (58 %) and the Story Sharing Process (74 %) were integral aspects of the Facilitated Engagement Approach used. Mentorship was found to be impactful in that mentors reported a change in their mentee. Conclusions: The Facilitated Engagement Approach was an effective tool for mentees and mentors to develop leadership capacities.
MeSH term(s)	Humans ; Mentors ; Program Evaluation ; Mentoring ; Nurse's Role ; Surveys and Questionnaires
Language	English
Publishing date	2024-03-07
Publishing country	Scotland
Document type	Journal Article
ZDB-ID	1062570-7
ISSN	1532-2793 ; 0260-6917
ISSN (online)	1532-2793
ISSN	0260-6917
DOI	10.1016/j.nedt.2024.106152
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Article ; Online: Increased physical activity is correlated with improved pregnancy outcomes in women with preeclampsia: A retrospective study.

Raguema, Nozha / Benletaifa, Dhafer / Mahjoub, Touhami / Lavoie, Julie L

Pregnancy hypertension

2020 Volume 21, Page(s) 118–123

Abstract: Objectives: Several studies have focused on the benefits of physical activity to prevent and treat preeclampsia, given that preeclampsia and cardiovascular disease share several risk factors. However, none of these studies have been conducted in Africa. ...

Abstract	Objectives: Several studies have focused on the benefits of physical activity to prevent and treat preeclampsia, given that preeclampsia and cardiovascular disease share several risk factors. However, none of these studies have been conducted in Africa. Moreover, it has been demonstrated that exercise training has preventive effects on the development of preeclampsia in mouse models. Therefore, we evaluated the association between the practice of physical activity and the development of this pathology in a Tunisian cohort. Study design: Sixty-one healthy pregnant Tunisian women and 45 women with preeclampsia were recruited and completed the Pregnancy Physical Activity Questionnaire to determine their level and type of physical activity during the entire pregnancy. Main outcome measure: Continuous variables were compared using the Mann-Whitney U test, while categorical variables were compared using the Chi-square test. The correlation between preeclampsia features and energy expenditure were assessed using the Pearson's correlation test. Results: Energy expenditure analysis revealed that women with preeclampsia engaged in more sedentary activities than controls, while controls practiced more physical activities. Interestingly, we found a positive correlation between the total amount of energy spent and the duration of pregnancy in controls and women with preeclampsia. Conclusions: Increasing physical activity is correlated with increasing pregnancy duration which is an index of maternal and fetal health. The practice of physical activities during pregnancy is associated with a healthier pregnancy, while sedentary activities is associated with the development of preeclampsia.
MeSH term(s)	Adult ; Case-Control Studies ; Energy Metabolism/physiology ; Exercise ; Female ; Humans ; Infant, Newborn ; Pre-Eclampsia/therapy ; Pregnancy ; Pregnancy Outcome ; Retrospective Studies ; Sedentary Behavior ; Tunisia
Language	English
Publishing date	2020-05-13
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	2584464-7
ISSN	2210-7797 ; 2210-7789
ISSN (online)	2210-7797
ISSN	2210-7789
DOI	10.1016/j.preghy.2020.05.005
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Article ; Online: Mouse Adipose Tissue Collection and Processing for RNA Analysis.

Tan, Paul / Pepin, Émilie / Lavoie, Julie L

Journal of visualized experiments : JoVE

2018 , Issue 131

Abstract: Compared to other tissues, white adipose tissue has a considerably less RNA and protein content for downstream applications such as real-time PCR and Western Blot, since it mostly contains lipids. RNA isolation from adipose tissue samples is also ... ...

Abstract	Compared to other tissues, white adipose tissue has a considerably less RNA and protein content for downstream applications such as real-time PCR and Western Blot, since it mostly contains lipids. RNA isolation from adipose tissue samples is also challenging as extra steps are required to avoid these lipids. Here, we present a procedure to collect three anatomically different white adipose tissues from mice, to process these samples and perform RNA isolation. We further describe the synthesis of cDNA and gene expression experiments using real-time PCR. The hereby described protocol allows the reduction of contamination from the animal's hair and blood on fat pads as well as cross-contamination between different fat pads during tissue collection. It has also been optimized to ensure adequate quantity and quality of the RNA extracted. This protocol can be widely applied to any mouse model where adipose tissue samples are required for routine experiments such as real-time PCR but is not intended for isolation from primary adipocytes cell culture.
MeSH term(s)	Adipose Tissue/pathology ; Animals ; Gene Expression/genetics ; Mice ; Proteins/metabolism ; RNA/metabolism
Chemical Substances	Proteins ; RNA (63231-63-0)
Language	English
Publishing date	2018-01-31
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't ; Video-Audio Media
ZDB-ID	2259946-0
ISSN	1940-087X ; 1940-087X
ISSN (online)	1940-087X
ISSN	1940-087X
DOI	10.3791/57026
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Article ; Online: Ultrasound Imaging of Remodeling in Fetal Mouse Heart and the Programming of Cardiomyopathy in Offspring of Superimposed Preeclampsia.

Benizri, Nissim / Marc, Casandra / Achille, Allahnah / Raguema, Nozha / Pepin, Émilie / Lavoie, Julie L / Bertagnolli, Mariane

Hypertension (Dallas, Tex. : 1979)

2021 Volume 77, Issue 5, Page(s) e47–e49

MeSH term(s)	Animals ; Cardiomyopathies/diagnostic imaging ; Disease Models, Animal ; Female ; Fetal Heart/diagnostic imaging ; Mice ; Pre-Eclampsia/diagnostic imaging ; Pregnancy ; Ultrasonography, Prenatal
Language	English
Publishing date	2021-03-22
Publishing country	United States
Document type	Letter ; Research Support, Non-U.S. Gov't
ZDB-ID	423736-5
ISSN	1524-4563 ; 0194-911X ; 0362-4323
ISSN (online)	1524-4563
ISSN	0194-911X ; 0362-4323
DOI	10.1161/HYPERTENSIONAHA.121.16959
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Article: A Longitudinal Pilot Study on Cognition and Cerebral Hemodynamics in a Mouse Model of Preeclampsia Superimposed on Hypertension: Looking at Mothers and Their Offspring.

Trigiani, Lianne J / Lecrux, Clotilde / Royea, Jessika / Lavoie, Julie L / Lesage, Frédéric / Pilote, Louise / Hamel, Edith

Frontiers in physiology

2021 Volume 12, Page(s) 611984

Abstract: Preeclampsia is a common hypertensive disorder in pregnant women and whose causes and consequences have focused primarily on cardiovascular outcomes on the mother and offspring, often without taking into consideration the possible effects on the brain. ... ...

Abstract	Preeclampsia is a common hypertensive disorder in pregnant women and whose causes and consequences have focused primarily on cardiovascular outcomes on the mother and offspring, often without taking into consideration the possible effects on the brain. One possible cause of preeclampsia has been attributed to alterations in the renin-angiotensin system, which has also been linked to cognitive decline. In this pilot study, we use a transgenic mouse model that chronically overexpresses human angiotensinogen and renin (R
Language	English
Publishing date	2021-02-01
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2564217-0
ISSN	1664-042X
ISSN	1664-042X
DOI	10.3389/fphys.2021.611984
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Article: MMP-2 and MMP-9 Polymorphisms and Preeclampsia Risk in Tunisian Arabs: A Case-Control Study.

Gannoun, Marwa Ben Ali / Raguema, Nozha / Zitouni, Hedia / Mehdi, Meriem / Seda, Ondrej / Mahjoub, Touhami / Lavoie, Julie L

Journal of clinical medicine

2021 Volume 10, Issue 12

Abstract: The abnormal production of matrix metalloproteinases (MMPs), especially MMP-9 and MMP-2, plays a pivotal role in hypertensive disorders of pregnancy, and as such, can influence the development of preeclampsia. These alterations may result from functional ...

Abstract	The abnormal production of matrix metalloproteinases (MMPs), especially MMP-9 and MMP-2, plays a pivotal role in hypertensive disorders of pregnancy, and as such, can influence the development of preeclampsia. These alterations may result from functional genetic polymorphisms in the promoter region of MMP-9 and MMP-2 genes, which modify MMP-9 and MMP-2 expression. We investigated the association of MMP-9 polymorphism rs3918242 (-1562 C>T) and MMP-2 polymorphism rs2285053 (-735 C>T) with the risk of preeclampsia. This case-control study was conducted on 345 women with preeclampsia and 281 age-matched women with normal pregnancies from Tunisian hospitals. Genomic DNA was extracted from whole blood collected at delivery. Genotypes for -1562 C>T and -735 C>T polymorphisms were performed using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). An increased frequency of heterozygous MMP-9 -1562 C/T genotype carriers was observed in women with preeclampsia compared to healthy controls (
Language	English
Publishing date	2021-06-16
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2662592-1
ISSN	2077-0383
ISSN	2077-0383
DOI	10.3390/jcm10122647
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Article ; Online: Contribution of -1031T/C and -376G/A tumor necrosis factor alpha polymorphisms and haplotypes to preeclampsia risk in Tunisia (North Africa).

Raguema, Nozha / Ben Ali Gannoun, Marwa / Zitouni, Hedia / Ben Letaifa, Dhafer / Seda, Ondrej / Mahjoub, Touhami / Lavoie, Julie L

Journal of reproductive immunology

2021 Volume 149, Page(s) 103461

Abstract: Preeclampsia is a gestational disorder characterized by hypertension and proteinuria. Excessive release of pro-inflammatory cytokines, particularly tumour necrosis factor-alpha, has been demonstrated to contribute to endothelial activation and poor ... ...

Abstract	Preeclampsia is a gestational disorder characterized by hypertension and proteinuria. Excessive release of pro-inflammatory cytokines, particularly tumour necrosis factor-alpha, has been demonstrated to contribute to endothelial activation and poor trophoblast invasion in placental development, resulting in preeclampsia's clinical symptoms. Genetic polymorphisms of tumour necrosis factor-alpha can regulate its production and may play an important role in the pathogenesis of this disease. This study aimed to evaluate the association of five tumour necrosis factor-alpha gene promoter single nucleotide polymorphisms, or their haplotype combinations, with preeclampsia prevalence. This case-control study was conducted on 300 women with preeclampsia and 300 age-matched women with normal pregnancy from Tunisian hospitals. Genotyping of tumour necrosis factor-alpha -1031 T/C, -376 G/A, -308 G/A, -238 G/A, and +489 G/A SNPs was performed on DNA extracted from blood samples using PCR-restriction fragment-length polymorphism analysis. Statistical analysis was performed using the chi-square test. P < 0.01 were considered statistically significant to take into consideration the multiple comparisons. A significantly higher frequency of the minor allele -1031C (p < 0.001) was observed in preeclampsia cases compared to controls. Notably, the -1031C and -376A (CA) haplotype, which correlates with a higher production of TNF-α protein, had a higher incidence in women with preeclampsia (p = 0.0005). Conversely, the TG haplotype had a low frequency in preeclampsia cases compared to controls (p = 0.002) which suggests that it is associated with a reduced incidence of preeclampsia. These results suggest that tumour necrosis factor-alpha polymorphisms, in particular the -1031C/A, and the haplotype CA, contribute to an increased risk of preeclampsia in Tunisian women.
MeSH term(s)	Adult ; Female ; Gene Frequency ; Genetic Association Studies ; Genetic Predisposition to Disease ; Genotype ; Humans ; Incidence ; Polymorphism, Genetic ; Pre-Eclampsia/epidemiology ; Pre-Eclampsia/genetics ; Pregnancy ; Risk ; Tumor Necrosis Factor-alpha/genetics ; Tunisia/epidemiology ; Young Adult
Chemical Substances	Tumor Necrosis Factor-alpha
Language	English
Publishing date	2021-12-08
Publishing country	Ireland
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	424421-7
ISSN	1872-7603 ; 0165-0378
ISSN (online)	1872-7603
ISSN	0165-0378
DOI	10.1016/j.jri.2021.103461
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Zs.A 1483: Show issues

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Article ; Online: Can exercise prevent preeclampsia?

Lavoie, Julie L / Gutkowska, Jolanta

Journal of hypertension

2011 Volume 29, Issue 7, Page(s) 1465

MeSH term(s)	Animals ; Exercise ; Female ; Humans ; Pre-Eclampsia/prevention & control ; Pregnancy
Language	English
Publishing date	2011-07
Publishing country	England
Document type	Comment ; Letter ; Research Support, Non-U.S. Gov't
ZDB-ID	605532-1
ISSN	1473-5598 ; 0263-6352 ; 0952-1178
ISSN (online)	1473-5598
ISSN	0263-6352 ; 0952-1178
DOI	10.1097/HJH.0b013e3283480e26
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Zs.A 1885: Show issues			Location: Je nach Verfügbarkeit (siehe Angabe bei Bestand) bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular Jg. 1995 - 2021: Lesesall (1.OG) ab Jg. 2022: Lesesaal (EG)
Zs.MO 614: Show issues

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Article: Mouse adipose tissue collection and processing for rna analysis

Tan, Paul / Pepin, Émilie / Lavoie, Julie L

Journal of visualized experiments. 2018 Jan. 31, , no. 131

2018

Abstract	Compared to other tissues, white adipose tissue has a considerably less RNA and protein content for downstream applications such as real-time PCR and Western Blot, since it mostly contains lipids. RNA isolation from adipose tissue samples is also challenging as extra steps are required to avoid these lipids. Here, we present a procedure to collect three anatomically different white adipose tissues from mice, to process these samples and perform RNA isolation. We further describe the synthesis of cDNA and gene expression experiments using real-time PCR. The hereby described protocol allows the reduction of contamination from the animal's hair and blood on fat pads as well as cross-contamination between different fat pads during tissue collection. It has also been optimized to ensure adequate quantity and quality of the RNA extracted. This protocol can be widely applied to any mouse model where adipose tissue samples are required for routine experiments such as real-time PCR but is not intended for isolation from primary adipocytes cell culture.
Keywords	RNA ; Western blotting ; adipocytes ; animal models ; blood ; cell culture ; complementary DNA ; cross contamination ; gene expression ; lipids ; mice ; protein content ; quantitative polymerase chain reaction ; white adipose tissue
Language	English
Dates of publication	2018-0131
Size	p. e57026.
Publishing place	Journal of Visualized Experiments
Document type	Article
ZDB-ID	2259946-0
ISSN	1940-087X
ISSN	1940-087X
DOI	10.3791/57026
Database	NAL-Catalogue (AGRICOLA)

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